CVE-2025-68666

Discourse users archives leaked to users with moderation privileges

State: Published
Severity: 5.9 Medium
Published: Jan 28, 2026
Updated: Feb 26, 2026
Reserved: Dec 22, 2025

Description

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked through the archives leading to a breach of confidentiality. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. To work around this problem, a site admin can temporarily revoke the moderation role from all moderators until the Discourse instance has been upgraded to a version that has been patched.

Scores

CVSS	Score	Vector	Source
4.0	5.9 Medium	CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
discoursediscourse	< 3.5.4Affected >= 2025.11.0-latest, < 2025.11.2Affected >= 2025.12.0-latest, < 2025.12.1Affected >= 2026.1.0-latest, < 2026.1.0Affected

References

https://github.com/discourse/discourse/security/advisories/GHSA-xmvw-jjqq-25mv

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